"It's about social injustice, I guess, where we put our money," said Indiana University senior Carl Simmons, who marched beside a gray-haired woman wearing a T-shirt that said "give peace a chance" on the back.

"Instead of fighting two wars, against terrorism and drugs, we should be investing in children and health care, education and the future," Simmons said. "We need to be accountable. If the tea party can make a ruckus, we can do so as well.

The marchers held up traffic at several intersections. Some drivers honked in support. Others were irritated by the delay.